Explanation

Triclosan is a broad-spectrum antimicrobial and antifungal chemical agent incorporated into personal care items and toiletries.

– It is routinely formulated into consumer products including antibacterial hand soaps, body washes, toothpastes, deodorants, and shaving gels to inhibit bacterial growth and prevent gingivitis.
– Chronic exposure to elevated concentrations of triclosan has triggered public health alerts due to endocrine disruption, thyroid hormone disruption, and the potential emergence of antimicrobial drug resistance.

Hence, triclosan is most commonly found in toiletries — Option D.